TY - JOUR
T1 - Switched linear control for refrigerant superheat recovery in vapor compression systems
AU - Pangborn, Herschel C.
AU - Alleyne, Andrew G.
N1 - Funding Information:
This material is based upon work supported by the National Science Foundation Graduate Research Fellowship under Grant Number DGE-1144245 and by the National Science Foundation Engineering Research Center for Power Optimization of Electro Thermal Systems (POETS) with cooperative agreement EEC-1449548 .
Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2016/12/1
Y1 - 2016/12/1
N2 - Extended durations of liquid refrigerant ingestion by the compressor of a vapor compression system (VCS) can lead to damage or failure of this component. While this can be prevented by inserting an accumulator between the evaporator and compressor, this addition of hardware may be undesirable for applications in which the weight or size of the thermal management system is critical. As an alternative, this paper proposes a switched Linear Quadratic Gaussian (LQG) design to quickly recover the presence of a superheated phase at the exit of the evaporator using feedback control. Stability analysis of the closed-loop switched system is presented, and application of the control approach in both simulation and on an experimental VCS testbed demonstrate the success of the control design.
AB - Extended durations of liquid refrigerant ingestion by the compressor of a vapor compression system (VCS) can lead to damage or failure of this component. While this can be prevented by inserting an accumulator between the evaporator and compressor, this addition of hardware may be undesirable for applications in which the weight or size of the thermal management system is critical. As an alternative, this paper proposes a switched Linear Quadratic Gaussian (LQG) design to quickly recover the presence of a superheated phase at the exit of the evaporator using feedback control. Stability analysis of the closed-loop switched system is presented, and application of the control approach in both simulation and on an experimental VCS testbed demonstrate the success of the control design.
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U2 - 10.1016/j.conengprac.2016.08.015
DO - 10.1016/j.conengprac.2016.08.015
M3 - Article
AN - SCOPUS:84989827471
VL - 57
SP - 142
EP - 156
JO - Control Engineering Practice
JF - Control Engineering Practice
SN - 0967-0661
ER -